matrix columnwise subtraction
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
I have the following matrix:
[ 1 2 3
1 3 4
4 5 6]
I need:
[ 0 -1 -2
0 -2 -3
0 -1 -2]
How can I do it?
0 Kommentare
Akzeptierte Antwort
Image Analyst
am 25 Nov. 2011
Try bsxfun:
% Generate sample data.
m = rand(3,5)
% Extract out the first column
m1 = m(:,1)
% Subtract first column from all the columns.
mMinusM1 = bsxfun(@minus,m,m1)
2 Kommentare
Titus Edelhofer
am 25 Nov. 2011
Small typo, to reproduce the example you need to subtract m from m1: m1MinusM = bsxfun(@minus, m1, m).
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Logical finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!